Street-sweeper



M. ZAWADA.

STREET SWEEPER.

APPLlCATlON FILED Aucm, 1920? Patented Mar. 8, 1921 2 SHE IS-SHEET 1.

E CW

I/v VENTOR M2 B Y A TTORNEY M. Z-AWAD A.\

STREET SWEEPER.

APPLICATION FILED AUG-11,1920- Patented Mar. 8, 1921.

- 2 SHEETSSHEET 2- BY A 1 TOR/YE UNITED STATES MICHAL ZA'WADA, OF BURLINGTON, NEW JERSEY.

STREET-SWEEPER.

Specification of Letters Patent.

Patented Mar. 8, 1921.

Application filed August 11, 1920. Serial No. 402,754.

Y 0 all whom it may concern:

Be it known that I, MicrmL ZA\VADA, a citizen of Poland, residing at Burlington, in the county of Burlington and State of New Jersey, have invented certain new and useful Improvements in Street-Sweepers, of which the following is a specification.

This invention relates to street sweepers, particularly to that class of devices used by street railways, and aims to provide such a device which is effective in thoroughly removing snow, dirt, and mud from the street tracks, and which may be operated by the motorman.

The above and other objects will become apparent in the description below, in which like characters of reference refer to likenamed parts in the drawings.

Referring briefly to the drawings, Figure l is a side elevational view, partly in section, of my device.

Fig. 2 is a plan view of the underside of the same.

Fig. 3 is a fragmentary front view, partly in section, of one of the sweeping elements.

Fig. 4 is a crosssectional view on the line 44 of Fig. 3.

Referring now in detail to the drawings, the numeral 1 represents the usual car mounted upon wheels 2. Motors 3 are mounted under the car body and through suitable bevel gears drive shafts i extending longitudinally of the car. The driving motors, which have been omitted for the sake of clearness, may also be used to actuate the sweeping device instead of the motors 3. Said shafts extend beyond the ends of the car, and upon the outer ends thereof are mounted propeller-like elements 7, 5 and 6. The former is provided with brushes 7 of the usual stiff. construction, and the latter with scrapers 8 of stiff but flexible material such as leather similar to that used for the soles of shoes. A hood 9 covers each pair of members 5 and 6.

In order that the brushes and scrapers may at all times press with force against the road, the said members are resiliently mounted upon the elements 5 and 6 through coiled springs 11 situated in sockets 10. In addition, in order to provide means for quickly and readily adjusting the device in case it needs such repair, the individual radial elements 12 are screwunounted in the central support 13 which is attached to the shaft 4.

Thus the combined action of the brushes and scrapers removes snow and refuse that may otherwise be passed by the simple brush.

I claim:

A device of the class described comprising a car, motors mounted under said car, shafts extending longitudinally of said car and actuated by said motors, propeller-like elements mounted upon said shafts, scrapers on one of said elements and brushes on another .of said elements, said scrapers and brushes being resiliently mounted upon said elements, said resilient mounting comprising recesses in said elements, coiled springs in said recesses, plates covering said recesses said brushes having frames contacting with said springs.

In testimony whereof I afiix my si nature.

MICHAL ZAWZDA. 

